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sams

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## Main Question or Discussion Point

In Mathematical Methods for Physicists, 6

"If A

I understand how to use equations (1.9) and their derivations, but could anyone please explain the above statement?

Thank you so much for your help...

^{th}Edition, by Arfken and Weber, Chapter 1 Vector Analysis, pages 8-9, the authors make the following statement:"If A

_{x}and A_{y}transform in the same way as*x*and*y*, the components of the general two-dimensional coordinate vector**r**, they are the components of a vector A. If A_{x}and A_{y}do not show this**form invariance**(also called**covariance**) when the coordinates are rotated, they do not form a vector."I understand how to use equations (1.9) and their derivations, but could anyone please explain the above statement?

Thank you so much for your help...